081
FNCA52 TJSJ 260833
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
433 AM AST MON JAN 26 2026
DISCUSSION
KBDI VALUES CONTINUE A GRADUAL RISE ACROSS THE REGION, WITH CABO
ROJO AT 667, GUANICA AT 564, AND CAMP SANTIAGO AT 592. FUEL MOISTURE
VALUES REMAIN LOW ACROSS COASTAL SOUTHWESTERN STATIONS, WITH 1-HR/10-
HR FUELS MEASURED AT 11%/14% IN CABO ROJO, AND 11%/13% IN GUANICA,
SUPPORTING ONGOING STRESSED VEGETATION CONDITIONS, PARTICULARLY
ALONG THE SOUTHWESTERN COASTAL PLAINS OF PUERTO RICO.
YESTERDAY, SOME WEATHER STATIONS ACROSS THE SOUTHERN COASTAL PLAINS
REPORTED BRIEF PERIODS OF RELATIVE FIRE DANGER CONDITIONS AS
RELATIVE HUMIDITIES DROPPED INTO THE 45-55% RANGE DUE TO A DRY
AIRMASS THAT MOVED OVER THE ISLANDS UNDER VERY GUSTY WINDS. DESPITE
THESE CONDITIONS, NO WILDFIRE INCIDENTS WERE REPORTED, AND NO NEW
SATELLITE THERMAL HOTSPOTS WERE DETECTED. OVER THE PAST 30-60 DAYS,
THE PERCENTAGE OF NORMAL RAINFALL HAS REMAINED ABOVE 100% ACROSS
MOST AREAS OF THE CENTRAL INTERIOR, ALTHOUGH LOCALIZED POCKETS IN
THE SOUTHWESTERN COASTAL REGION ARE CLOSER TO 50%, CONTRIBUTING TO
THE PERSISTENCE OF VEGETATION STRESS ALONG A NARROW STRIP OF THE
SOUTHERN COASTAL PLAINS.
TODAY, WIND SPEEDS ARE EXPECTED TO DECREASE COMPARED TO YESTERDAY,
BUT COULD STILL REACH THRESHOLD VALUES AT TIMES. SLIGHTLY HIGHER
MOISTURE IS EXPECTED TODAY, BUT RELATIVE HUMIDITY MAY STILL BRIEFLY
FALL BELOW CRITICAL LEVELS IN LOCALIZED AREAS. THESE FACTORS COULD
ALLOW FOR SHORT-LIVED AND LOCALIZED FIRE WEATHER CONCERNS. HOWEVER,
THE OVERALL FIRE WEATHER THREAT REMAINS LOW, WITH ANY RISK EXPECTED
TO BE OF LIMITED DURATION AND SPATIAL EXTENT.
CONDITIONS WILL CONTINUE TO BE MONITORED CLOSELY THROUGHOUT THE DAY
FOR ANY CHANGES.
PRZ014-270845-
SOUTHEAST COASTAL PLAINS-
433 AM AST MON JAN 26 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 40 60
TEMP (24H TREND) 87 (+1) 66 (-4) 87
RH % (24H TREND) 58 (-1) 94 (+5) 56
WIND 20FT/EARLY(MPH) E 16 G24 E 11 E 13 G21
WIND 20FT/LATE(MPH) E 16 G24 E 11 E 13 G21
MIXING HGT(FT-AGL/MSL)4820 4450
TRANSPORT WND (MPH) E 20 E 13
VENT RATE (KT-FT) 81940 48950
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-270845-
SOUTHERN HILLS-
433 AM AST MON JAN 26 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 30 60
TEMP (24H TREND) 83 (+2) 64 (-4) 83
RH % (24H TREND) 63 (-2) 96 (+6) 63
WIND 20FT/EARLY(MPH) E 13 E 12 E 12
WIND 20FT/LATE(MPH) E 13 E 12 E 12
MIXING HGT(FT-AGL/MSL)5290 4710
TRANSPORT WND (MPH) E 18 E 13
VENT RATE (KT-FT) 84640 51810
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-270845-
NORTH COASTAL PLAINS-
433 AM AST MON JAN 26 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 30 40
TEMP (24H TREND) 85 (0) 66 (-4) 85
RH % (24H TREND) 63 (-1) 99 (+4) 61
WIND 20FT/EARLY(MPH) E 19 E 12 E 12
WIND 20FT/LATE(MPH) E 19 E 12 E 12
MIXING HGT(FT-AGL/MSL)4870 4350
TRANSPORT WND (MPH) E 18 E 13
VENT RATE (KT-FT) 77920 47850
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-270845-
NORTHERN HILLS-
433 AM AST MON JAN 26 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 50
TEMP (24H TREND) 85 (+1) 64 (-3) 84
RH % (24H TREND) 61 (0) 99 (+3) 62
WIND 20FT/EARLY(MPH) E 17 E 9 E 11
WIND 20FT/LATE(MPH) E 17 E 9 E 11
MIXING HGT(FT-AGL/MSL)5890 4600
TRANSPORT WND (MPH) E 15 E 10
VENT RATE (KT-FT) 76570 41400
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-270845-
WEST COAST-
433 AM AST MON JAN 26 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 40 50
TEMP (24H TREND) 87 (0) 65 (-3) 86
RH % (24H TREND) 59 (-1) 99 (+8) 60
WIND 20FT/EARLY(MPH) E 13 E 13 E 12
WIND 20FT/LATE(MPH) E 13 E 13 E 12
MIXING HGT(FT-AGL/MSL)4760 3970
TRANSPORT WND (MPH) E 12 E 7
VENT RATE (KT-FT) 47600 23820
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-270845-
EASTERN INTERIOR-
433 AM AST MON JAN 26 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 50 50
TEMP (24H TREND) 83 (+1) 65 (-4) 84
RH % (24H TREND) 67 (-1) 99 (+4) 63
WIND 20FT/EARLY(MPH) E 14 E 13 E 11
WIND 20FT/LATE(MPH) E 14 E 13 E 11
MIXING HGT(FT-AGL/MSL)4930 4490
TRANSPORT WND (MPH) E 20 E 13
VENT RATE (KT-FT) 83810 49390
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-270845-
LUQUILLO MOUNTAIN RANGE-
433 AM AST MON JAN 26 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 50 50
TEMP (24H TREND) 79 (+3) 64 (-4) 79
RH % (24H TREND) 70 (-5) 100 (+3) 67
WIND 20FT/EARLY(MPH) E 12 E 11 E 10
WIND 20FT/LATE(MPH) E 12 E 11 E 10
MIXING HGT(FT-AGL/MSL)4220 3870
TRANSPORT WND (MPH) E 21 E 14
VENT RATE (KT-FT) 75960 46440
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-270845-
CENTRAL MOUNTAIN RANGE-
433 AM AST MON JAN 26 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 30 50
TEMP (24H TREND) 83 (+4) 61 (-4) 82
RH % (24H TREND) 61 (-3) 99 (+6) 64
WIND 20FT/EARLY(MPH) E 11 E 6 E 9
WIND 20FT/LATE(MPH) E 11 E 6 E 9
MIXING HGT(FT-AGL/MSL)6720 5110
TRANSPORT WND (MPH) E 13 E 8
VENT RATE (KT-FT) 73920 35770
DISPERSION 5 5
DSI 6 1 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-270845-
CAYEY MOUNTAIN RANGE-
433 AM AST MON JAN 26 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 50 60
TEMP (24H TREND) 78 (+1) 65 (-2) 78
RH % (24H TREND) 73 (-1) 100 (+4) 69
WIND 20FT/EARLY(MPH) E 12 E 11 E 11
WIND 20FT/LATE(MPH) E 12 E 11 E 11
MIXING HGT(FT-AGL/MSL)4520 4170
TRANSPORT WND (MPH) E 21 E 13
VENT RATE (KT-FT) 81360 45870
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-270845-
VIEQUES-
433 AM AST MON JAN 26 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 30 40
TEMP (24H TREND) 85 (+1) 71 (-2) 85
RH % (24H TREND) 59 (-3) 95 (+6) 57
WIND 20FT/EARLY(MPH) E 17 G21 E 16 G20 E 12
WIND 20FT/LATE(MPH) E 17 G21 E 16 G20 E 12
MIXING HGT(FT-AGL/MSL)3790 3500
TRANSPORT WND (MPH) E 23 E 15
VENT RATE (KT-FT) 75800 45500
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-270845-
CULEBRA-
433 AM AST MON JAN 26 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 30 40
TEMP (24H TREND) 85 (+1) 73 (-2) 85
RH % (24H TREND) 61 (-5) 92 (+5) 58
WIND 20FT/EARLY(MPH) E 17 G21 E 16 G20 E 12
WIND 20FT/LATE(MPH) E 17 G21 E 16 G20 E 12
MIXING HGT(FT-AGL/MSL)3610 3580
TRANSPORT WND (MPH) E 23 E 21
VENT RATE (KT-FT) 72200 64440
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-270845-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
433 AM AST MON JAN 26 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 40
TEMP (24H TREND) 88 (+1) 67 (-4) 88
RH % (24H TREND) 56 (-1) 92 (+7) 56
WIND 20FT/EARLY(MPH) E 18 G27 E 17 G24 E 16 G24
WIND 20FT/LATE(MPH) E 18 G27 E 17 G24 E 16 G24
MIXING HGT(FT-AGL/MSL)5070 4720
TRANSPORT WND (MPH) E 20 E 12
VENT RATE (KT-FT) 86190 47200
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-270845-
SAINT THOMAS AND SAINT JOHN-
433 AM AST MON JAN 26 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 30 30
TEMP (24H TREND) 86 (+5) 71 (-5) 86
RH % (24H TREND) 60 (-10) 94 (+4) 58
WIND 20FT/EARLY(MPH) E 17 G21 E 17 G21 E 11
WIND 20FT/LATE(MPH) E 17 G21 E 17 G21 E 11
MIXING HGT(FT-AGL/MSL)3650 3450
TRANSPORT WND (MPH) E 21 E 20
VENT RATE (KT-FT) 65700 58650
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-270845-
ST CROIX-
433 AM AST MON JAN 26 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 30 40
TEMP (24H TREND) 85 (+2) 71 (-4) 86
RH % (24H TREND) 59 (-8) 94 (+7) 58
WIND 20FT/EARLY(MPH) E 16 G20 E 14 G17 E 13 G17
WIND 20FT/LATE(MPH) E 16 G20 E 14 G17 E 13 G17
MIXING HGT(FT-AGL/MSL)4510 4260
TRANSPORT WND (MPH) E 23 E 18
VENT RATE (KT-FT) 90200 68160
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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